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http://dx.doi.org/10.4191/KCERS.2007.44.4.230

Effects of Additive Composition and Content on Sintered Density and Compressive Strength of Cordierite Ceramics  

Jang, Doo-Hee (Department of Materials Science and Engineering, the University of Seoul)
Lim, Kwang-Young (Department of Materials Science and Engineering, the University of Seoul)
Kim, Young-Wook (Department of Materials Science and Engineering, the University of Seoul)
Publication Information
Journal of the Korean Ceramic Society / v.44, no.4, 2007 , pp. 230-234 More about this Journal
Abstract
Cordierite ceramics were fabricated via a reaction sintering process using ceramics-filled polysiloxane as a precursor for cordierite ceramics. In this study, the effects of the additive composition, additive content, and sintering temperature on the sintered density and compressive strength of cordierite ceramics have been investigated The sintered densities of reaction-sintered cordierite ceramics containing $TiO_2$ as an additive were insensitive to the additive composition, additive content, and sintering temperature and ranged from $1.92g/cm^3\;to\;2.06g/cm^3$. In contrast, the cordierite ceramics containing $Y_2O_3$ showed a maximal density of $2.21g/cm^3$ at 5 wt% addition and at a sintering temperature of $1400^{\circ}C$. The compressive strength of cordierite ceramics showed the same tendency with the density. Typical compressive strength of cordierite ceramics containing 5 wt% $Y_2O_3$ as a sintering additive and sintered at $1400^{\circ}C\;was\;{\sim}480MPa$.
Keywords
Cordierite; Reaction sintering; Densification; Compressive strength;
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